Statistics 1.1

Question 0

descriptive statistics

Answer 0

Organizing and summarizing data. Describes data through numerical summaries, tables, and graphs.

Question 1

Statistic

Answer 1

the science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions. In addition, statistics is about providing a measure of confidence in ay conclusions.

Question 2

Inferential statistics

Answer 2

Uses methods that take a result from a sample, extend it to the population, and measure the reliability of the result.

Question 3

Population

Answer 3

The entire group to be studied

Question 4

Sample

Answer 4

A subset of the population that is being studied

Question 5

Individual

Answer 5

A person or object that is a member of the population being studied

Question 6

Parameter

Answer 6

A numerical summary of a population

Question 7

Statistic

Answer 7

A numerical summary of a sample

Question 8

Variables

Answer 8

The characteristics of the individuals within the population

Can be classified in two groups: qualitative and quantitative

Question 9

qualitative (categorical)

Answer 9

Allows for classification of individuals based on some attribute or characteristics

Question 10

Quantitative

Answer 10

Provides numerical measures of individuals. The values can be added or subtracted and have meaning.

	Can be divided into two groups: discrete and continuous

Question 11

Discrete

Answer 11

Quantitative variable that has either a finite number of possible values or a countable number of possible values. CANNOT take on every possible value between any two values

Ex: 0,1,2,3; NOT 0.3, 1.5, 2.24,....

Question 12

Continuous

Answer 12

A quantitative variable that has an infinite number of possible values that are not countable. Can take on every possible value between two values

Ex: 1, 1.2, 1.335, 1.5, 2, 2.4,.....

Question 13

data

Answer 13

The list of observed values for a variable

Ex: gender, color, make & model...